Using SnCl4as raw materials and the quantitative filter paper as a template, SnO2nano-particles were prepared by impregnation and calcination method which were applied in dye-sensitized solar cell. XRD,TEM and SEM were used to characterize the composition and microstructure of the samples. Photoelectric performance and internal impedance of the assembled cells were tested by electrochemical workstation. The results show that high purity and crystallinity nano-sized SnO2of together-linked structure composite...